Guide to Solid Phase Extraction - Sigma-Aldrich

Bulletin 910T197910 1998 Sigma-Aldrich Phase Extraction (SPE) is an increasingly useful sample preparation technique. With SPE, many of the problems associated withliquid/liquid Extraction can be prevented, such as incomplete Phase separations, less-than-quantitative recoveries, use of expensive,breakable specialty glassware, and disposal of large quantities of organic solvents. SPE is more efficient than liquid/liquid Extraction ,yields quantitative extractions that are easy to perform, is rapid, and can be automated. Solvent use and lab time are is used most often to prepare liquid samples and extract semivolatile or nonvolatile analytes, but also can be used with solidsthat are pre-extracted into solvents. SPE products are excellent for sample Extraction , concentration, and cleanup. They are availablein a wide variety of chemistries, adsorbents, and sizes.

Bulletin 910 T197910 ©1998 Sigma-Aldrich Co. Introduction Solid phase extraction (SPE) is an increasingly useful sample preparation technique. With SPE, many of the problems associated with

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